Better latency

Hi everybody,

i know this gonna be a luxury request but nevertheless is it possible to get less latency?

I am watching lot of concerts and DJ sets with corresponding light shows and here latency in image and Hyperion is particularly noticeable.

My setup consists of a Raspberry Pi 4 running LibreElec, 198 WS2812 Leds connected via a set of SN75174 Driver / SN75176 Receiver combo and Rudihorns DRM-VC4-Grabber.

According datasheets the SN75174 Driver / SN75176 Receiver combo should add a worst case delay of max 0.2ms, so should be negligible.

I don't really know whats causing the latency: Hyperion, the grabber, the Pi 4 or the WS2812 leds?

So any suggestions to reduce latency are welcome.

Best regards

Marxon

Hi pclin,

thanks for your input!

Smoothing settings:

of course deactivated

Baudrate:

Latch time is set to 4ms (pwm mode). Shouldt be enough for 198 WS2812 leds.

Faster LED stripes:

WS2812 shouldt be fast enough for watching 50Hz content.

FPS:

Need to test this...

Driver/receiver:

Because my data line runs next to my PSU, wifi router, DECT phone and power line, i was fighting led flickering.

Best regards

Marxon